Total bridges
463
Public highway bridges in Calcasieu County
County profile · official public datasets
Calcasieu County, LA
463 public highway bridges tracked in the FHWA National Bridge Inventory: 19% rated Good, 73% Fair, 8% Poor.
- 463
- Public bridges
- 19%
- Good condition
- 8%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Calcasieu County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 33%
- lowest Poor share in state
- 8%
- Poor-condition share
- 463
- public highway bridges
- 1983
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Calcasieu County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Calcasieu County ranks #21 of 64 Louisiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 8%). Calcasieu County, Louisiana contains 463 public highway bridges. Roughly 19% are rated “Good,” 73% “Fair,” and 8% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
19%
88 of 463 rated 7-9
Fair condition
73%
338 of 463 rated 5-6
Poor condition
8%
37 of 463 rated 4 or below
In-state Poor-share rank
#21 of 64
Among Louisiana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 463 NBI-tracked bridges by lowest applicable component rating.
Good 19% (88)
Fair 73% (338)
Poor 8% (37)
Calcasieu County's Poor-condition bridges carry 328,426 vehicle crossings a day
That is 6% of the county's reported daily bridge traffic on 7.6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 9,384 crossings a day against 6,506 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 461 of 463 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
40.4% of Calcasieu County's bridges have passed the 50-year mark
187 of the 463 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 19% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 26.5% of the county's Poor-condition bridge traffic
I0010 over SABINE RELIEF, built 1954, carries 86,969 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 37-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 328,426 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Calcasieu County's bridges were built
463 bridges with a recorded construction year, grouped by decade
- 1920s 4
1920–1929
4 bridges
- 1930s 6
1930–1939
6 bridges
- 1940s 2
1940–1949
2 bridges
- 1950s 46
1950–1959
46 bridges
- 1960s
1960–1969
120 bridges
- 1970s
1970–1979
55 bridges
- 1980s 43
1980–1989
43 bridges
- 1990s
1990–1999
69 bridges
- 2000s 35
2000–2009
35 bridges
- 2010s
2010–2019
56 bridges
- 2020s 27
2020–2029
27 bridges
What this shows Construction peaked in the 1960s, when 120 of the county's bridges still in the inventory were built, which is 25.9% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1983) matches the Louisiana average (1982).
How Calcasieu County compares with Louisiana's closest counties by inventory size
The 5 Louisiana counties nearest Calcasieu County in number of bridges, with their condition splits. Its 8% Poor share is the 3rd-lowest of these 6. Its average build year of 1983 against a peer-group mean of 1981 is in line with the group.
Showing the 5 closest of 63 Louisiana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| East Baton Rouge County | 548 | 41.8% | 38.5% | 19.7% | 1980 |
| Rapides County | 523 | 53.3% | 39.6% | 7.1% | 1987 |
| Tangipahoa County | 477 | 40.7% | 45.9% | 13.4% | 1977 |
| Calcasieu County (this page) | 463 | 19% | 73% | 8% | 1983 |
| Orleans County | 382 | 43.7% | 46.3% | 9.9% | 1976 |
| Jefferson County | 379 | 58.6% | 36.9% | 4.5% | 1984 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Calcasieu County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Calcasieu County, both outside Louisiana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside LA (463 bridges here).
- Darke County, OH · 463 bridges
- Anderson County, SC · 463 bridges
- Jefferson County, CO · 464 bridges
- Hamilton County, TN · 464 bridges
Similar average build year
Nearest mean year-built outside LA (1983 here).
- Dallas County, TX · avg 1983 · 3,230 bridges
- Bexar County, TX · avg 1983 · 2,342 bridges
- Sedgwick County, KS · avg 1983 · 1,333 bridges
- Will County, IL · avg 1983 · 649 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (37)
LA0012
PoorOver: MUD LAKE
2.4 MI W of LA 109, Calcasieu, LA
Built 1952 Load: 0.0 t ADT: 3,365
I0010
PoorOver: SABINE RELIEF
2.1 MI WEST OF LA 109, Calcasieu, LA
Built 1954 Load: 0.0 t ADT: 86,969
PACKING HOUSE RD
PoorOver: KINNER GULLY
0.5 MI N of US 90, Calcasieu, LA
Built 1995 Load: 0.0 t ADT: 653
CUSTER ST
PoorOver: CANAL
0.01 MI E. OF INT. 5, Calcasieu, LA
Built 1995 Load: 5.4 t
RUSSELL STREET
PoorOver: FARMERS L & C CO. CANAL
0.2 MI E of LA 14, Calcasieu, LA
Built 1970 Load: 6.5 t ADT: 450
LA3256
PoorOver: ENGLISH BAYOU
.74 MI NORTH OF US 90, Calcasieu, LA
Built 1969 Load: 11.7 t ADT: 1,062
LA0109
PoorOver: GULLY
0.1 MI S OF LA 12, Calcasieu, LA
Built 1957 Load: 12.3 t ADT: 1,749
LA3063
PoorOver: DRAINAGE DITCH
0.1 MI S of US 90, Calcasieu, LA
Built 1968 Load: 13.0 t ADT: 1,918
BRYAN ST
PoorOver: GUM SLOUGH
0.01 MI. E. OF INT., Calcasieu, LA
Built 1974 Load: 13.9 t
WEST ST
PoorOver: BUXTON CREEK
0.1 MI N of PATRICIA H RD, Calcasieu, LA
Built 1955 Load: 16.3 t ADT: 50
LOUISIANA AVE
PoorOver: CONTRABAND BAYOU
0.3 MI. N. OF LA 3186, Calcasieu, LA
Built 1957 Load: 16.8 t ADT: 8,942
SHELL BEACH DR
PoorOver: DRAINAGE CANAL
0.3 MI S of LA 385, Calcasieu, LA
Built 1937 Load: 17.2 t ADT: 8,548
HENDERSON BAYOU RD
PoorOver: HENDERSON BAYOU
.2 MI W of W PRIEN LAKE R, Calcasieu, LA
Built 1960 Load: 18.5 t ADT: 1,869
LA0027
PoorOver: ICWW - ELLENDERS
5.9 MI S OF LA 108, Calcasieu, LA
Built 1977 Load: 18.8 t ADT: 6,981
N GRAND AVE
PoorOver: BUXTON CREEK
0.4 MI NORTH OF LA 12, Calcasieu, LA
Built 1997 Load: 19.1 t ADT: 273
KIRKMAN ST
PoorOver: CONTRABAND BAYOU
0.25 MI N OF LA 3186, Calcasieu, LA
Built 1964 Load: 19.4 t ADT: 6,090
LA0378
PoorOver: W FORK CALCASIEU RIVER
3.27 MI W OF US 171, Calcasieu, LA
Built 1968 Load: 19.8 t ADT: 13,371
RIVER RD
PoorOver: KINNER GULLY
0.5 MI NE OF LA 3059, Calcasieu, LA
Built 1987 Load: 19.8 t ADT: 1,608
BIG WOODS-STARKS
PoorOver: BIRD ISLAND BAY
4.6 MI E of LA 109, Calcasieu, LA
Built 1968 Load: 19.8 t ADT: 1,152
LA3258
PoorOver: BAYOU
0.7 MI E of LA 383, Calcasieu, LA
Built 1969 Load: 21.7 t ADT: 1,878
US0090
PoorOver: KAYOUCHE COULEE
0.7 MI E OF LA 14, Calcasieu, LA
Built 1958 Load: 22.0 t ADT: 6,080
WEST 18TH STREET
PoorOver: GUM CREEK
0.6 MI W of LA 385, Calcasieu, LA
Built 1965 Load: 22.0 t ADT: 4,078
LA0397
PoorOver: ENGLISH BAYOU
0.3 MI N of I-10, Calcasieu, LA
Built 1963 Load: 22.7 t ADT: 9,291
I0010
PoorOver: CALCASIEU RIVER RR STS
2.3 MI E OF I-210, Calcasieu, LA
Built 1952 Load: 23.0 t ADT: 86,600
E. LINCOLN RD
PoorOver: BLACK BAYOU
1.9 MI. E. OF LA 385, Calcasieu, LA
Built 1987 Load: 24.3 t ADT: 617
PICARD RD
PoorOver: DINDE BAYOU
0.6 MI S. OF US90, Calcasieu, LA
Built 1968 Load: 24.9 t ADT: 2,741
LA0012
PoorOver: SABINE RIVER
.56 MI WEST OF LA 109, Calcasieu, LA
Built 1938 Load: 26.3 t ADT: 3,365
LA0027
PoorOver: DINDE BAYOU
1.2 MI S of US 90, Calcasieu, LA
Built 1960 Load: 26.3 t ADT: 14,973
US0090
PoorOver: I-10/RAMPS
2.6 Mi E of LA 108, Calcasieu, LA
Built 1960 Load: 26.9 t ADT: 9,758
LA0014
PoorOver: BAYOU
9.2 MI EAST OF LA 27, Calcasieu, LA
Built 1966 Load: 27.2 t ADT: 1,363
PRATER ROAD
PoorOver: RR I-10
0.9 MI S OF US 90, Calcasieu, LA
Built 1962 Load: 29.2 t ADT: 3,766
LA0108
PoorOver: BAYOU DINDE
1.0 M S of I-10, Calcasieu, LA
Built 1945 Load: 32.7 t ADT: 10,981
LA0027
PoorOver: I-10
1.5 MI S OF US 90, Calcasieu, LA
Built 1962 Load: 33.4 t ADT: 14,973
LA0027
PoorOver: CHOUPIQUE BAYOU
3.4 MI SOUTH OF LA 1133, Calcasieu, LA
Built 1979 Load: 33.6 t ADT: 6,981
I0210
PoorOver: I-10
2.1 MI W of LA 397, Calcasieu, LA
Built 1977 Load: 37.2 t ADT: 608
COMMON ST
PoorOver: DRAINAGE CANAL
0.4 MI. N. OF 12TH ST., Calcasieu, LA
Built 1928 Load: 39.2 t ADT: 3,974
E. GAUTHIER RD
PoorOver: CREEK
0.6 MI W of LA 397, Calcasieu, LA
Built 1986 Load: 74.5 t ADT: 1,349
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.